Improvement in middlings-separators



C. F. KELLER.

MIDDLINGS SEPARATOR.

N0. 181,18Z. Patented Aug .15,1876.

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N-FETER$. PHQWLFDIOGRAPHER, WASHJNGTON. D, C.

OHAUNOY F. KELLER, OF NEVADA, OHIO, ASSIGNORTO BELA B. ZIMMERMAN, OF GREENSBURG, PENNSYLVANIA.

IMPROVEMENTYIN MlDDLINGS-SEPARATORS.

Specification forming part of Letters Patent N0. 181, 182, dated August 15, 1876; application filed- 7 June 7, 1876. v

To all whom it may concern:

Be it known that I, OnAUNoY F. KELLER, of Nevada, county of Wyandot, and State of Ohio, have invented certain new and.- useful Improvementsin Middlings-Purifiers,of which the following is a full, clear, and exact description, reference being had to the accon1'-' panying drawings, making a part of this specification, in which- Figure 1 represents a vertical longitudinalsection through my improved middlings-pu'rifier. Fig. 2 is a vertical transverse section through the same, and Fig. 3 is a side elevation (shortened) with the outer casing to one of the bolting-chambers removed.

The invention relates to a novel arrangement ofpipes or passages controlling the currents of air relative to the bolts and boltingchambers, whereby the middlings are acted upon by the currents of air after they have escaped from said bolts and bolting-chambers, and in their descent therefrom to the conveyer after they have been thoroughly opened up by the bolts, and are in best condition for effecting the separation of the lighter particles and fuzzy matter therefrom, as hereinafter explained.

In the accompanying drawings, A represents the inclosing frame-work and easing of the machine, divided substantially into three separate horizontal compartments, B and B B extending lengthwise of the frame or machine. The upper one of these compartments, B, is made, by preference, in the form of an octagon, as conforming substantially to the shape of the bolting-reel G, the object of which is to extract or remove the fine flour adhering to the middlings.

These middlin gs, with the adheringflour, are fed in at the head of the bolt 0 through a spout or pipe, a, curved at its lower end to enter the open end or head of the bolt, as shown, and the flour separated from the middlings during their passage lengthwise of the bolting-reel passes through the bolting-cloth, and is deposited upon the inclined bottom boards I) 1), down which itdescends to the conveyer-trough b, located between the lower bolting-chambers B B and from which it is discharged by any usual form of conveyor, D, and passes out in outline in transverse section, the inclined bottom boards B extending inward and downward from the outer vertical side boards to, and terminating in the vertical plane of, but below, the inner vertical side boards 6 c, leaving the discharge -openings at f f, through which the middlings pass to the lower conveyer-trough E. Within the chambers B B are placed the middlings'bolts O G, which receive the middling's after they have passed through the flour-extracting bolt 0, said middlings being conveyed to the bolts 0 through chutes or spouts g g, arranged at the discharging end of bolt 0, and adapted to divide the middlings aboutevenly between the bolts 0'0.-

These bolts 0 may be graded, and the middlings discharged therefrom pass down the'in-' elined sides or bottomB through the outlets f f, and into the conveyer-trough E,'whence' they are discharged through outlets h, by means of a conveyor, F, of any usual or pre- The vertical walls or.

ferred construction. sides of the trough F have horizontal slots or openings h h, extending their entire length, arranged ator near the plane of the upper face of the conveyer F, and the upper and lower walls of these slots are inclined .inward, as shown, to prevent the escape of the middlings, and for giving direction to the currents of air passing inward through them.

Directly over the conveyor-trough E, above the openings f f, between the inclined bottom boards B and side walls or boards a e, and between said side walls, a series of air-pipes, k k, &;c., are arranged horizontally, one above another, as shown in Figs. 1 and 2. These pipes are made of varying lengths, and at their inner'ends are provided with obliquely arranged or inclined mouths or mouth-pieces l l, &c., which all terminate in the same horizontal plane between the side walls 0 e, these months extending together the entire length of the space between the walls 6 e, and dividing it into about equal parts, as shown. The outer ends of the air pipes or ducts k W, 860.,

all terminate, in the same vertical transverse PATENT @rrrcn plane, in a fan-chamber, G, at the head or one end of the machine, as shown.

Within the fanchamber is a fan-wheel, G, of any suitable construction, mounted upon and operated through the medium of a shaft, m, which extends longitudinally through the machine, and is driven by means of a bandwheel, m, upon its opposite end.

Theoperation ofthe parts above described is as follows: Motion being imparted to the bolts 0 O G and fan G, the middlings to be operated upon are fed in through the spout or chute a to the head of bolt 0, and. passing through the same,ha\'e the adhering fine flour and upward into the pipes 70 70 ,850., by the fan G, and being in the thoroughly openedup and separated condition in which they were discharged by the bolts, the lighter impurities and fuzzy particles are readily separated therefrom, and are drawn by the currents of air upward and outward through the pipes la la into the fan-chamber, whence they are discharged into the dust-chamber in the usual manner.

The outer end of the fan-chamber is provided with an opening, 19, covered by slides 10, by withdrawing which, to uncover the opening 19, to a greater or less extent, more or less air may be drawn through said opening for supplying air to the fan-chamber, thereby relieving the pipes kk and modifying the force as desired.

of the currents of air acting on the middlings, By the arrangement of air pipes or passages, as described, it will be seen that the middlings are not acted upon by the currents of air until the operation of bolting is fully completed, and the middlings have left the bolting-chamber proper, and in their passage therefrom to the conveyor-trough; and, further, that each air passage or pipe acts independently of the others, and upon its own particularportion of the graded middlings, to

which, by its length, size, or capacity, it may be especially adapted.

Where the quantity of middlin gs to be acted 'upon is small, a single middlings-bolt,0, may

be employed, arranged underneath the conveyer-trough, and where the work requires it the number may be increased, care being taken in either case to preserve the intermediate relation of the discharge-outlets f f to the airinlets h and the pipes 70 7c.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The air passages or pipes arranged inter: mediate between the bolting-chambers B 131, and in the described relation to the outletpassages ff, substantially as and for the purpose specified. i

2. The bolting-chambers B B B, with their respective bolts arranged in the described relation to each other, and to the air pipes or passages k k k, &c., and operating substantially as described.

3. The middlings-discharge outlets f of the bolting-chambers B arranged intermediately between the inlet air-passage h in the con veyer-trough and the air pipes or passages k 70, substantially as and for the purpose set forth.

OHAUNOY F. KELLER.

Witnesses:

O. W. BURK, H. W. WILLIAMS. 

